Has anyone used this stuff and does it work (I see it on the shelves at my Auto Zone)? When I replaced the exhaust system on my 96 Civic I noticed that everywhere where it is sprayed on there is no rust. I also noticed that the entire "runway" for the exhaust has no undercoating sprayed there and there is rust here and there, also true for the wheel wells. Can I spray on the undercoating in these area's, and will it work?

 

not sure if its same stuff but sounds like underseal that is used on cars from factory here in u.k. works hence why mosty manufacturers apply it on production line here